Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Electric field magnitude problem
- gracy
- · Replies 27 ·
Experiment to Investigate Air Resistance
- Jimmy87
- · Replies 46 ·
Size of current in parallel wires
- songminho
- · Replies 8 ·
ACTUAL Variation of Potential inside a diode.
- Amal Thejus
- · Replies 2 ·
Calculating Time for a Trailer to Move with Constant Friction
- Cincin
- · Replies 5 ·
Fluid Dynamics - Hydrostatic Pressure #2
- Lukas_RSA
- · Replies 4 ·
How does air resistance affect terminal velocity for a diver?
- Janiceleong26
- · Replies 6 ·
Wire with current and field problem
- Callix
- · Replies 6 ·
Period of Rotation for Artificial Gravity on Earth
- astrololo
- · Replies 12 ·
Why Does Light Interference Differ from Sound Interference?
- Janiceleong26
- · Replies 2 ·
Error in Natural Frequency (Lab)
- Afterthought
- · Replies 1 ·
Spring potential energy and mass
- kolua
- · Replies 12 ·
Find force box exerts on other box up incline
- Entr0py
- · Replies 11 ·
Why does heat make objects break?
- albert.mck
- · Replies 3 ·
Force on Space Ship: Mag to Nearest MN
- Felicity Wang
- · Replies 1 ·
Closed trajectory in a central field of force; find the mass
- Nathanael
- · Replies 9 ·
How to find the positon of a local vector
- Aceix
- · Replies 6 ·
1st Law of Thermodynamics question
- Jamessamuel
- · Replies 7 ·
Finding velocities of points on two riveted pulleys
- bkw2694
- · Replies 8 ·
Capacitors and Calculating for Capacitance involving Plates
- Aromire
- · Replies 11 ·
Fluid Dynamics - Hydrostatic Pressure
- Lukas_RSA
- · Replies 1 ·
The Graph of an Idealized Quantized Spring-Mass Oscillator
- Oribe Yasuna
- · Replies 1 ·
What is the current flowing through the wires?
- songminho
- · Replies 2 ·
Forces needed to slide up the plane
- goldfish9776
- · Replies 11 ·
What Is the Sled's Speed When Released from a Compressed Spring?
- Elvis 123456789
- · Replies 8 ·
Finding Zero Power at Inductor Terminals
- RMZ
- · Replies 19 ·
Physics momentum and acceleration
- troy132
- · Replies 12 ·
Combine conservation of mechanical energy with the work-ener
- marcosdannyjp
- · Replies 1 ·
Weight change from Earth's surface to top of a 1-mile building
- SadPanda6022
- · Replies 25 ·
Finding angle for specific moment
- werson tan
- · Replies 13 ·
Potential Energy and Kinetic Energy
- Manh
- · Replies 4 ·
Kite motion problem: acceleration while speeding up
- Matt_Theta
- · Replies 13 ·
How Does Point Connection Affect Potential in a Circuit with Resistor Ratios?
- Peter Velkov
- · Replies 9 ·
Velocity of boat connected by a pulley fixed at some height
- cr7einstein
- · Replies 6 ·
Moment on a a semi quarter plate
- werson tan
- · Replies 4 ·
Calculating Acceleration of a Ball Rolling Down a Slope
- Biasface
- · Replies 5 ·
How would you calculate the length of a year on a planet?
- songminho
- · Replies 2 ·
Determining Position and Center of Mass using Reference Frame
- Vicinity24
- · Replies 8 ·
How Do You Calculate Magnetic Energy Density at an Atom's Center?
- phyvamp
- · Replies 6 ·
How Is Energy Transformed in a Satellite's Decaying Orbit Due to Air Friction?
- Zynoakib
- · Replies 3 ·
Finding forces in members AD, BD, and DC from two equations
- goldfish9776
- · Replies 21 ·
Finding Image Distance Relative to the Eyepiece
- Barry Melby
- · Replies 1 ·
De Broglie wavelength of a train
- ConorDMK
- · Replies 1 ·
Density of bar submerged in water
- Roodles01
- · Replies 3 ·
How Can Torque Be Increased in an Electric Motor?
- Physics GOD
- · Replies 3 ·
Work done by forces on a block sliding down a frictionless incline
- Tim Wellens
- · Replies 5 ·
What is the magnitude and direction of resulting force with given values?
- SadPanda6022
- · Replies 5 ·
Position of third charged particle
- Voidy
- · Replies 3 ·
Two blocks connected by rope on same surface with friction
- astrololo
- · Replies 6 ·
Force exerted on the palm of your hand by a beam of light
- Eric Diaz
- · Replies 4 ·
Gauge pressure and atmospheric pressure
- ppppparker
- · Replies 2 ·
Determine the force involving static coefficient
- goldfish9776
- · Replies 2 ·
Finding critical molar volume from van der Waals equation derivatives
- krootox217
- · Replies 2 ·
Why Do Three Blocks on a Frictionless Surface Accelerate at the Same Rate?
- astrololo
- · Replies 2 ·
Book answer wrong? Work = Fd question. Space Shuttle entry
- Barclay
- · Replies 5 ·
Calculating Planet Mass from Stellar and Orbital Speed
- Dustin salinas
- · Replies 9 ·
How electric fields store energy in a capacitor
- kostoglotov
- · Replies 16 ·
Finding the mass of a planet is a binary system
- Zynoakib
- · Replies 2 ·
Tension in a system of blocks
- goldfish9776
- · Replies 6 ·
What Kind of Radiation Does the GM Counter Detect?
- new hand
- · Replies 1 ·
What are the individual speeds of two balls after a fully elastic collision?
- Monkeybusiness
- · Replies 7 ·
Energy changes of water from a reservoir
- Janiceleong26
- · Replies 10 ·
Magnetic field produced by a moving electron
- Callix
- · Replies 8 ·
Number of Particles in Left Half of a Confined Box with Varying Energies
- phoenix95
- · Replies 2 ·
Finding the speed v of the proton
- Janiceleong26
- · Replies 2 ·
Potential Energy and Loop-de-Loops
- brinstar
- · Replies 10 ·
What is the rotational velocity of the crank?
- Lauren Wright
- · Replies 3 ·
What Is the Minimum Velocity Required for a Sphere to Overcome a Step?
- andyfeynman
- · Replies 8 ·
Problem related to two conductors in contact
- gracy
- · Replies 31 ·
How to Solve for Joule-Coefficient in a Gas System?
- krootox217
- · Replies 10 ·
How hard must you hit a rod for it to swing up 180 degrees?
- Lauren Wright
- · Replies 1 ·
Calculating Coulomb Force on a Point Charge in a Square Distribution
- azizlwl
- · Replies 8 ·
No.of orders of diffraction visible
- Janiceleong26
- · Replies 3 ·
Understanding Back EMF in DC Motors
- Harrison G
- · Replies 16 ·
Electric Field of a Uniformly Charged Disc at Large Distances
- whatisreality
- · Replies 2 ·
Power consumption in KWH of motor
- Dave250526
- · Replies 7 ·
Battery connected outside a circuit
- Gabe805
- · Replies 7 ·
Calculating Spring Stretch on a Ramp with Varying Acceleration and Friction
- Tim Wellens
- · Replies 3 ·
Work done and temperature change for monatomic ideal gas from PV plot
- Sondra
- · Replies 2 ·
Magnitude of radial component of jerk along line of centres
- tim_from_oz
- · Replies 1 ·
Connected objects with friction
- cfarrell
- · Replies 4 ·
Solve Spring Stretch on 30° Ramp, 20kg, 500N/m, Friction 0.3/.2
- Tim Wellens
- · Replies 6 ·
Net Entropy Change in Heat Engine Cycle
- Sondra
- · Replies 6 ·
What resistor value gives 160W power to the 8Ω resistor?
- roinujo1
- · Replies 11 ·
Police car catching speeder at constant velocity
- Heres2hoping
- · Replies 3 ·
What is the velocity of a dart that is fired?
- DeathEater
- · Replies 29 ·
Prove that the nth energy level of atom has degeneracy n^2
- tententententen
- · Replies 1 ·
Need some checking on these Multiple choice questions
- catch22
- · Replies 9 ·
Average potential and kinetic energies for H ground state
- tententententen
- · Replies 2 ·
Finding the equilibrium state from force diagrams
- Ivan Antunovic
- · Replies 10 ·
Energy eigenstates of a particle in a one dimensional box.
- phoenix95
- · Replies 12 ·
Finding Freefall Acceleration on a planet
- B3NR4Y
- · Replies 3 ·
How Does Non-Pure Rolling Differ from Pure Rolling in Rotational Dynamics?
- DavidLee
- · Replies 4 ·
Q and W for Van-der-Waals Gases
- krootox217
- · Replies 10 ·
Find fundamental freq. and 1st overtone closed each end pipe
- moenste
- · Replies 4 ·
Derivatives in relation to physics
- SadPanda6022
- · Replies 8 ·
De Broglie wavelength of a 2 eV neutron
- as123
- · Replies 4 ·
Understanding the Collapse of Two Bodies in Free Space: Gravity Question
- Sobi
- · Replies 5 ·
What Direction Should You Row to Cross a River Straight Across?
- negation
- · Replies 17 ·
A gun of mass M fires a shell of mass m and recoils horizont
- jpcyiu
- · Replies 1 ·